Ventuz is generating a SystemID for every Machine Ventuz is installed on. Those SystemID's have to be unique across the Network especially when it comes to remote configuration and cluster synchronization. Unfortunately it isn't when your are working with cloned windows images.To solve the issue you have to apply a Registry Key with a unique SystemID for each Machine manually.

Simply copy the following text into a file, change the SystemID and save it as a .reg file. Double click the file to add the regKey to the System.